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/* Create a named fifo.
Copyright (C) 2009-2022 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* written by Eric Blake */
#include <config.h>
#include <sys/stat.h>
#include <errno.h>
#include <string.h>
#if !HAVE_MKFIFO
/* Mingw lacks mkfifo; always fail with ENOSYS. */
int
mkfifo (_GL_UNUSED char const *name, _GL_UNUSED mode_t mode)
{
errno = ENOSYS;
return -1;
}
#else /* HAVE_MKFIFO */
# undef mkfifo
/* Create a named fifo FILE, with access permissions in MODE. Work
around trailing slash bugs. */
int
rpl_mkfifo (char const *name, mode_t mode)
{
# if MKFIFO_TRAILING_SLASH_BUG
size_t len = strlen (name);
if (len && name[len - 1] == '/')
{
struct stat st;
if (stat (name, &st) == 0 || errno == EOVERFLOW)
errno = EEXIST;
return -1;
}
# endif
return mkfifo (name, mode);
}
#endif /* HAVE_MKFIFO */
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